A sugar mill roller has patterns of lines cut into its surface. These lines are called grooves.
These grooves are found in four shapes: V-Shaped, Helical Grooves, Straight Grooved and perforated rollers. Grooved sugar mill roller increases juice extraction to 94-97%. However, modern milling equipment is important.
Types of Grooved Rollers
Types Of Grooved Sugar Mill Rollers
V-Shaped Grooves
V-Grooved Sugar Mill Roller
Sugar mill rollers often have V-shaped circumferential grooves. This means that the roller’s surface has rings of V-grooves around it. V grooves have a density of 2 to 8 grooves per inch with angles of 60° or greater.
The grooves typically mesh which means that two rollers interlock while rotating. This increases the cane grip. It is the oldest groove type that still remains the industrial standard in today’s time.
Benefits and Limitations of V-Grooved Sugar Mill Roller
Helical Grooves
Helical Grooved Sugar Mill Roller
Helical grooves are cut in a spiral or screw-like pattern along the roller. These are mostly used in feed rollers, and sometimes used in top rollers. However, this design of grooved sugar mill roller is rarely used.
Benefits and Limitations of Helical Groove Sugar Mill Roller
Straight Grooves
Straight Groove Sugar Mill Roller
These grooves go lengthwise along the roller instead of wrapping around it. This means that the grooves are parallel to the roller axis. In sugar milling, this is uncommon, but might have niche roles or serve as hybrid designs.
Benefits and Limitations of Straight Groove Sugar Mill Roller
Perforated Rollers
Perforated Sugar Mill Roller
The perforated sugar mill roller has many small radial holes drilled in its shell. These holes are precisely engineered and connect to internal drain channels.
The holes allow juice to be directly collected by the internal drainage system. This prevents the reabsorption of juice in the bagasse. In some designs, the perforated roller is used in the final roller in the mill train.
Benefits and Limitations of Perforated Sugar Mill Roller
Cost of Grooved Sugar Mill Roller
A grooved sugar mill roller costs approximately $3,500 – $4,500 USD per unit.
Price-Specific Modifications:
- Groove Patterns: Custom groove patterns can increase the price by $300 – $700 USD per unit.
- Material Choice: Grooved rollers made of high-strength alloy steel increase the price by $500 – $1,000 per unit.
- Surface Treatments: Corrosion-resistant coatings increase the price by $500 – $1,000 USD.
- Size and Shaft Customization: Mill specific custom sizes or shafts add $400 – $800 USD per unit.
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Conclusion
Grooved sugar mill rollers have a special pattern carved into them. They can be V-Shaped, Helical Grooves, Straight Grooved and perforated rollers. Each type comes with its benefits and costs. Overall grooved sugar mill rollers are intended to improve cane grip, juice drainage and mill’s efficiency.
